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Magnetic crystals formed by 2D layers interacting by weak van der Waals forces are currently a hot research topic. When these crystals are thinned to nanometric size, they can manifest strikingly different magnetic behavior compared to the bulk form. This can be the result of, for example, quantum electronic confinement effects, the presence of defects, or pinning of the crystallographic structure in metastable phases induced by the exfoliation process. In this work, an investigation of the magnetism of micromechanically cleaved CrCl3 flakes with thickness >10 nm is performed. These flakes are characterized by superconducting quantum interference device magnetometry, surface‐sensitive X‐ray magnetic circular dichroism, and spatially resolved magnetic force microscopy. The results highlight an enhancement of the CrCl3 antiferromagnetic interlayer interaction that appears to be independent of the flake size …
Publication date: 
10 May 2020

Michele Serri, Giuseppe Cucinotta, Lorenzo Poggini, Giulia Serrano, Philippe Sainctavit, Judyta Strychalska‐Nowak, Antonio Politano, Francesco Bonaccorso, Andrea Caneschi, Robert J Cava, Roberta Sessoli, Luca Ottaviano, Tomasz Klimczuk, Vittorio Pellegrini, Matteo Mannini

Biblio References: 
Pages: 2000566
Advanced Materials